Finding the Fourth Proportional to 2,100.32, 3,147.37 and 1,869.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.32 : 3,147.37 = 1,869.64 : x
2. Step 2: Convert to fraction form
   2,100.32/3,147.37 = 1,869.64/x
3. Step 3: Cross multiply
   2,100.32x = 3,147.37 × 1,869.64
4. Step 4: Simplify right side
   2,100.32x = 5,884,448.85
5. Step 5: Solve for x
   x = 5,884,448.85/2,100.32
6. Step 6: Final answer
   x = 2,801.69